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/*
* Ralink RT305x SoC specific setup
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Ralink's 2.6.21 BSP
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <asm/mipsregs.h>
#include <asm/mach-ralink/common.h>
#include <asm/mach-ralink/ramips_gpio.h>
#include <asm/mach-ralink/rt305x.h>
#include <asm/mach-ralink/rt305x_regs.h>
void __iomem * rt305x_sysc_base;
void __iomem * rt305x_memc_base;
enum rt305x_soc_type rt305x_soc;
void __init ramips_soc_prom_init(void)
{
void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT305X_SYSC_BASE);
const char *name = "unknown";
u32 n0;
u32 n1;
u32 id;
n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
if (n0 == RT3052_CHIP_NAME0 && n1 == RT3052_CHIP_NAME1) {
unsigned long icache_sets;
icache_sets = (read_c0_config1() >> 22) & 7;
if (icache_sets == 1) {
rt305x_soc = RT305X_SOC_RT3050;
name = "RT3050";
} else {
rt305x_soc = RT305X_SOC_RT3052;
name = "RT3052";
}
} else if (n0 == RT3350_CHIP_NAME0 && n1 == RT3350_CHIP_NAME1) {
rt305x_soc = RT305X_SOC_RT3350;
name = "RT3350";
} else if (n0 == RT3352_CHIP_NAME0 && n1 == RT3352_CHIP_NAME1) {
rt305x_soc = RT305X_SOC_RT3352;
name = "RT3352";
} else if (n0 == RT5350_CHIP_NAME0 && n1 == RT5350_CHIP_NAME1) {
rt305x_soc = RT305X_SOC_RT5350;
name = "RT5350";
} else {
panic("rt305x: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
}
id = __raw_readl(sysc + SYSC_REG_CHIP_ID);
snprintf(ramips_sys_type, RAMIPS_SYS_TYPE_LEN,
"Ralink %s id:%u rev:%u",
name,
(id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK,
(id & CHIP_ID_REV_MASK));
ramips_mem_base = RT305X_SDRAM_BASE;
if (soc_is_rt305x() || soc_is_rt3350() || soc_is_rt5350()) {
ramips_mem_size_min = RT305X_MEM_SIZE_MIN;
ramips_mem_size_max = RT305X_MEM_SIZE_MAX;
} else if (soc_is_rt3352()) {
ramips_mem_size_min = RT3352_MEM_SIZE_MIN;
ramips_mem_size_max = RT3352_MEM_SIZE_MAX;
} else {
BUG();
}
}
static struct ramips_gpio_chip rt305x_gpio_chips[] = {
{
.chip = {
.label = "RT305X-GPIO0",
.base = 0,
.ngpio = 24,
},
.regs = {
[RAMIPS_GPIO_REG_INT] = 0x00,
[RAMIPS_GPIO_REG_EDGE] = 0x04,
[RAMIPS_GPIO_REG_RENA] = 0x08,
[RAMIPS_GPIO_REG_FENA] = 0x0c,
[RAMIPS_GPIO_REG_DATA] = 0x20,
[RAMIPS_GPIO_REG_DIR] = 0x24,
[RAMIPS_GPIO_REG_POL] = 0x28,
[RAMIPS_GPIO_REG_SET] = 0x2c,
[RAMIPS_GPIO_REG_RESET] = 0x30,
[RAMIPS_GPIO_REG_TOGGLE] = 0x34,
},
.map_base = RT305X_PIO_BASE,
.map_size = RT305X_PIO_SIZE,
},
{
.chip = {
.label = "RT305X-GPIO1",
.base = 24,
.ngpio = 16,
},
.regs = {
[RAMIPS_GPIO_REG_INT] = 0x38,
[RAMIPS_GPIO_REG_EDGE] = 0x3c,
[RAMIPS_GPIO_REG_RENA] = 0x40,
[RAMIPS_GPIO_REG_FENA] = 0x44,
[RAMIPS_GPIO_REG_DATA] = 0x48,
[RAMIPS_GPIO_REG_DIR] = 0x4c,
[RAMIPS_GPIO_REG_POL] = 0x50,
[RAMIPS_GPIO_REG_SET] = 0x54,
[RAMIPS_GPIO_REG_RESET] = 0x58,
[RAMIPS_GPIO_REG_TOGGLE] = 0x5c,
},
.map_base = RT305X_PIO_BASE,
.map_size = RT305X_PIO_SIZE,
},
{
.chip = {
.label = "RT305X-GPIO2",
.base = 40,
.ngpio = 12,
},
.regs = {
[RAMIPS_GPIO_REG_INT] = 0x60,
[RAMIPS_GPIO_REG_EDGE] = 0x64,
[RAMIPS_GPIO_REG_RENA] = 0x68,
[RAMIPS_GPIO_REG_FENA] = 0x6c,
[RAMIPS_GPIO_REG_DATA] = 0x70,
[RAMIPS_GPIO_REG_DIR] = 0x74,
[RAMIPS_GPIO_REG_POL] = 0x78,
[RAMIPS_GPIO_REG_SET] = 0x7c,
[RAMIPS_GPIO_REG_RESET] = 0x80,
[RAMIPS_GPIO_REG_TOGGLE] = 0x84,
},
.map_base = RT305X_PIO_BASE,
.map_size = RT305X_PIO_SIZE,
},
};
static struct ramips_gpio_data rt305x_gpio_data = {
.chips = rt305x_gpio_chips,
.num_chips = ARRAY_SIZE(rt305x_gpio_chips),
};
static void rt305x_gpio_reserve(int first, int last)
{
for (; first <= last; first++)
gpio_request(first, "reserved");
}
void __init rt305x_gpio_init(u32 mode)
{
u32 t;
rt305x_sysc_wr(mode, SYSC_REG_GPIO_MODE);
ramips_gpio_init(&rt305x_gpio_data);
if ((mode & RT305X_GPIO_MODE_I2C) == 0)
rt305x_gpio_reserve(RT305X_GPIO_I2C_SD, RT305X_GPIO_I2C_SCLK);
if ((mode & RT305X_GPIO_MODE_SPI) == 0)
rt305x_gpio_reserve(RT305X_GPIO_SPI_EN, RT305X_GPIO_SPI_CLK);
t = mode >> RT305X_GPIO_MODE_UART0_SHIFT;
t &= RT305X_GPIO_MODE_UART0_MASK;
switch (t) {
case RT305X_GPIO_MODE_UARTF:
case RT305X_GPIO_MODE_PCM_UARTF:
case RT305X_GPIO_MODE_PCM_I2S:
case RT305X_GPIO_MODE_I2S_UARTF:
rt305x_gpio_reserve(RT305X_GPIO_7, RT305X_GPIO_14);
break;
case RT305X_GPIO_MODE_PCM_GPIO:
rt305x_gpio_reserve(RT305X_GPIO_10, RT305X_GPIO_14);
break;
case RT305X_GPIO_MODE_GPIO_UARTF:
case RT305X_GPIO_MODE_GPIO_I2S:
rt305x_gpio_reserve(RT305X_GPIO_7, RT305X_GPIO_10);
break;
}
if ((mode & RT305X_GPIO_MODE_UART1) == 0)
rt305x_gpio_reserve(RT305X_GPIO_UART1_TXD,
RT305X_GPIO_UART1_RXD);
if ((mode & RT305X_GPIO_MODE_JTAG) == 0)
rt305x_gpio_reserve(RT305X_GPIO_JTAG_TDO, RT305X_GPIO_JTAG_TDI);
if ((mode & RT305X_GPIO_MODE_MDIO) == 0)
rt305x_gpio_reserve(RT305X_GPIO_MDIO_MDC,
RT305X_GPIO_MDIO_MDIO);
if ((mode & RT305X_GPIO_MODE_SDRAM) == 0)
rt305x_gpio_reserve(RT305X_GPIO_SDRAM_MD16,
RT305X_GPIO_SDRAM_MD31);
if ((mode & RT305X_GPIO_MODE_RGMII) == 0)
rt305x_gpio_reserve(RT305X_GPIO_GE0_TXD0,
RT305X_GPIO_GE0_RXCLK);
}
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